using System;
using System.Collections.Generic;
using System.Linq;
using RimWorld;
using rjw;
using UnityEngine;
using Verse;
using Verse.AI;
using Verse.Sound;

namespace Rimworld_Animations {
    public class CompExtendedAnimator : ThingComp
    {

        // CompExtendedAnimator
        // Helps manage AnimationQueue, AbsolutePosition
        //ticks of current animation
        private int animationTicks;

        private List<AnimationDef> animationQueue;
        private BaseExtendedAnimatorAnchor anchor;
        private Vector3? offset;
        private bool isAnimating = false;

        
        public bool IsAnimating
        {
            get
            {
                return isAnimating;
            }
        }

        public bool IsAnchored
        {
            get
            {
                return anchor != null;
            }
        }

        public Vector3? Offset
        {
            get
            {
                return offset;
            }
            set
            {
                this.offset = value;
            }
        }

        public Vector3 getAnchor()
        {
            return anchor.getDrawPos();
        }

        public override void CompTick()
        {
            if (isAnimating)
            {
                animationTicks++;

                //if animationticks is equal to cur. anim duration,
                if (animationTicks >= animationQueue[0].durationTicks)
                {
                    //dequeue; returns false if more animations
                    if (!PopAnimationQueue())
                    {
                        //play next if more anims still
                        PlayNextAnimation();
                    }
                    else
                    {
                        StopAnimating();
                    }
                }
            }
            


            base.CompTick();
        }

        //returns false if still more animations
        public bool PopAnimationQueue()
        {
            
            if (!animationQueue.Empty())
            {
                //pop queue
                animationQueue.RemoveAt(0);
            }

            return animationQueue.Empty();
        }

        public void PlayNextAnimation()
        {
            if (!animationQueue.Empty())
            {
                isAnimating = true;
                animationTicks = 0;
                pawn.Drawer.renderer.SetAnimation(animationQueue[0]);
            }
        }

        public void StopAnimating()
        {
            isAnimating = false;
            animationQueue = null;
            anchor = null;
            offset = null;
            pawn.Drawer.renderer.SetAnimation(null);
        }

        public void PlayGroupAnimation(List<AnimationDef> groupAnimation, Vector3? offset)
        {
            this.Offset = offset;
            animationQueue = groupAnimation;
            PlayNextAnimation();
        }

        public void PlayGroupAnimation(List<AnimationDef> groupAnimation, Vector3? offset, BaseExtendedAnimatorAnchor anchor)
        {
            this.anchor = anchor;
            PlayGroupAnimation(groupAnimation, offset);
        }

        public override void PostExposeData()
        {
            base.PostExposeData();
            Scribe_Values.Look<bool>(ref this.isAnimating, "animations_isAnimating", false);
            Scribe_Values.Look<int>(ref this.animationTicks, "animations_ticks", 0);
            Scribe_Collections.Look<AnimationDef>(ref animationQueue, "animations_queue");
            Scribe_Deep.Look<BaseExtendedAnimatorAnchor>(ref this.anchor, "animations_anchor");
            
        }

        public override List<PawnRenderNode> CompRenderNodes()
        {
            //only if pawn is animating for performance
            if (IsAnimating)
            {
                List<PawnRenderNode> animRenderNodes = new List<PawnRenderNode>();

                // for all animationpropdefs,
                foreach (AnimationPropDef animationProp in DefDatabase<AnimationPropDef>.AllDefsListForReading)
                {
                    //if animation makes use of prop,
                    if (AnimationMakesUseOfProp(animationProp))
                    {

                        PawnRenderNodeProperties props = animationProp.animPropProperties;
                        if (props.texPath.NullOrEmpty())
                        {
                            props.texPath = "AnimationProps/Banana/Banana";
                        }

                        //create new render node
                        PawnRenderNode animRenderNode = (PawnRenderNode)Activator.CreateInstance(props.nodeClass, new object[] {
                            this.pawn,
                            props,
                            pawn.Drawer.renderer.renderTree
                        });

                        animRenderNodes.Add(animRenderNode);
                    }

                }

                //return list of rendernodes that should animate
                return animRenderNodes;

            }
            else
            {
                return null;
            }

        }

        public bool AnimationMakesUseOfProp(AnimationPropDef animationProp)
        {
            // never true if not animating; anim props shouldn't be attached
            if (!IsAnimating) return false;

            //for ONLY THE CURRENT animation,
            foreach (PawnRenderNodeTagDef propTag in animationQueue[0].animationParts.Keys)
            {
                // if that proptag is the same as the one for animationProp,
                if (propTag == animationProp.animPropProperties.tagDef)
                {
                    //that prop is being used in the animation
                    return true;
                }
            }
           
            return false;
        }

        private Pawn pawn => base.parent as Pawn;

    }

}